Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.185" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard Hood Pin ButlerBuilt Seat 17in SFI 39

ButlerBuilt Seat 17in SFI 39

For Suction Applications

Has Mintimer/EV1 Electrical Connection

1/4 in Tall Pins

This piece is included with both the C5 Radiator Duct and the Bump 'N Run Radiator Duct

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.185" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard Hood Pin ButlerBuilt Seat 17in SFI 39Hastings racing piston rings deliver race winning performance in even the most extreme applications. The low tension, low friction design provides unsurpassed combustion seating and exceptional sealing. Each set includes plasma moly, high tensile cast iron top rings; reverse twist, taper faced cast iron second rings, and choice of standard or low tension Flex Vent stainless steel oil control rings. Low tension oil rings make significant increases in